ELK4 and acute myeloid leukemia: With respect to fusion transcripts, in addition to the subtype-defining fusion transcripts, we detected 26 additional fusion transcripts from 18 patients (9 inv(16) and 9 t(8;21) AML) including two recurrent fusion transcripts in t(8;21) AML (SLC45A3-ELK4 and CSNK1G2-JAK2) (Fig. 3c and Table S9).